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<br />November 15, 1995 <br />1995 AHR Adequacy Response <br />Basin Resources <br />page 3 of 4 <br />`! 4. Zero values in the historic summary for PAW-5 and PAW-6 have been reviewed and <br />~`~ modified when appropriate on A-123 and A-127. <br />5. PAW-7 is located below Pond 005 at Golden Eagle, at leas[ 300 feet from the river. The <br />~~\~ .~ nominal quantity of water in this well is anaerobic and the well has a low recharge rate. <br />Bailing stirred up sediment. It was not possible to acquire a sample from fresh recharge <br />~~ at this site. The statement "bailed out contaminated" is misleading. <br />" ~~~ 6. May sampling visits for the bedrock wellsowere n~performed due to a combination of <br />~~ problems; pumps were being set in the deep wells and the generator was not working <br />~ n~ correctly. The two New Elk mine workings sites, NEW-2 and NEW-4, did not get <br />c,\~r, sampled due to the sampling difficulties associated with the bedrock wells. <br />~`''UU ~ ,~„3 s <br />7. The sampling of LA-221 was performed in a manner inconsistent with the hydrologic <br />A •`~~ monitoring plan, due to an oversight. In addition, the field sampling summaries, to which <br />\a U~ - we have access, show the variation in water level values between 224 feet and 324 feet for <br />~(~' the 1995 data. The 1994 data summarized for LA-264 and LA-221 is reported the same <br />as you observed. Sampling of LA-264 and LA-221 was re-initiated in 1994. These old <br />monitoring sites were not clearly marked and the sampler got contused when recording the <br />data. <br />o ~ ~~~~ We suspect that the elevated December depth to water of 27 feet at LA-264 came about <br />~ because the M-Scope gave an erroneous reading due to water inside the casing. <br />\k ~t 9. Basin was not able to collect a quarterly sample at NM-20 in May due to problems with <br />~~ pump installation and generator difficulties as noted in question 6. NM-20 is an alkaline <br />/n~ , ~,J? sodium carbonate water, and has been very alkaline since it was constructed. The June <br />U~ 11 V`^'" depth-to-water of 400 feet appears to be an anomaly, but the depth was confirmed with the <br />Q ~'~+ field notes for the site. <br />10. TH-201 was blocked at 22'. However the obstruction Iras been cleared and site has been <br />Q1 ~ ,~ dry. <br />~ ~I_ o~~ <br />